FM / uri

/opt/cpanel/ea-ruby27/root/usr/share/ruby/ruby-2.7.8/uri/

/opt/cpanel/ea-ruby27/root/usr/share/ruby/ruby-2.7.8/uri

Name	Size	Mode	Actions
common.rb	20090	0644	edit dl rm
file.rb	2064	0644	edit dl rm
ftp.rb	7208	0644	edit dl rm
generic.rb	37130	0644	edit dl rm
http.rb	2409	0644	edit dl rm
https.rb	571	0644	edit dl rm
ldap.rb	5933	0644	edit dl rm
ldaps.rb	506	0644	edit dl rm
mailto.rb	8023	0644	edit dl rm
rfc2396_parser.rb	17821	0644	edit dl rm
rfc3986_parser.rb	6394	0644	edit dl rm
version.rb	152	0644	edit dl rm

Edit: /opt/cpanel/ea-ruby27/root/usr/share/ruby/ruby-2.7.8/uri/generic.rb (37130B)

# frozen_string_literal: true

# = uri/generic.rb
#
# Author:: Akira Yamada <akira@ruby-lang.org>
# License:: You can redistribute it and/or modify it under the same term as Ruby.
# Revision:: $Id$
#
# See URI for general documentation
#

require_relative 'common'
autoload :IPSocket, 'socket'
autoload :IPAddr, 'ipaddr'

module URI

#
  # Base class for all URI classes.
  # Implements generic URI syntax as per RFC 2396.
  #
  class Generic
    include URI

#
    # A Default port of nil for URI::Generic.
    #
    DEFAULT_PORT = nil

#
    # Returns default port.
    #
    def self.default_port
      self::DEFAULT_PORT
    end

#
    # Returns default port.
    #
    def default_port
      self.class.default_port
    end

#
    # An Array of the available components for URI::Generic.
    #
    COMPONENT = [
      :scheme,
      :userinfo, :host, :port, :registry,
      :path, :opaque,
      :query,
      :fragment
    ].freeze

#
    # Components of the URI in the order.
    #
    def self.component
      self::COMPONENT
    end

USE_REGISTRY = false # :nodoc:

def self.use_registry # :nodoc:
      self::USE_REGISTRY
    end

#
    # == Synopsis
    #
    # See ::new.
    #
    # == Description
    #
    # At first, tries to create a new URI::Generic instance using
    # URI::Generic::build. But, if exception URI::InvalidComponentError is raised,
    # then it does URI::Escape.escape all URI components and tries again.
    #
    def self.build2(args)
      begin
        return self.build(args)
      rescue InvalidComponentError
        if args.kind_of?(Array)
          return self.build(args.collect{|x|
            if x.is_a?(String)
              DEFAULT_PARSER.escape(x)
            else
              x
            end
          })
        elsif args.kind_of?(Hash)
          tmp = {}
          args.each do |key, value|
            tmp[key] = if value
                DEFAULT_PARSER.escape(value)
              else
                value
              end
          end
          return self.build(tmp)
        end
      end
    end

#
    # == Synopsis
    #
    # See ::new.
    #
    # == Description
    #
    # Creates a new URI::Generic instance from components of URI::Generic
    # with check.  Components are: scheme, userinfo, host, port, registry, path,
    # opaque, query, and fragment. You can provide arguments either by an Array or a Hash.
    # See ::new for hash keys to use or for order of array items.
    #
    def self.build(args)
      if args.kind_of?(Array) &&
          args.size == ::URI::Generic::COMPONENT.size
        tmp = args.dup
      elsif args.kind_of?(Hash)
        tmp = ::URI::Generic::COMPONENT.collect do |c|
          if args.include?(c)
            args[c]
          else
            nil
          end
        end
      else
        component = self.class.component rescue ::URI::Generic::COMPONENT
        raise ArgumentError,
        "expected Array of or Hash of components of #{self.class} (#{component.join(', ')})"
      end

tmp << nil
      tmp << true
      return self.new(*tmp)
    end

#
    # == Args
    #
    # +scheme+::
    #   Protocol scheme, i.e. 'http','ftp','mailto' and so on.
    # +userinfo+::
    #   User name and password, i.e. 'sdmitry:bla'.
    # +host+::
    #   Server host name.
    # +port+::
    #   Server port.
    # +registry+::
    #   Registry of naming authorities.
    # +path+::
    #   Path on server.
    # +opaque+::
    #   Opaque part.
    # +query+::
    #   Query data.
    # +fragment+::
    #   Part of the URI after '#' character.
    # +parser+::
    #   Parser for internal use [URI::DEFAULT_PARSER by default].
    # +arg_check+::
    #   Check arguments [false by default].
    #
    # == Description
    #
    # Creates a new URI::Generic instance from ``generic'' components without check.
    #
    def initialize(scheme,
                   userinfo, host, port, registry,
                   path, opaque,
                   query,
                   fragment,
                   parser = DEFAULT_PARSER,
                   arg_check = false)
      @scheme = nil
      @user = nil
      @password = nil
      @host = nil
      @port = nil
      @path = nil
      @query = nil
      @opaque = nil
      @fragment = nil
      @parser = parser == DEFAULT_PARSER ? nil : parser

if arg_check
        self.scheme = scheme
        self.userinfo = userinfo
        self.hostname = host
        self.port = port
        self.path = path
        self.query = query
        self.opaque = opaque
        self.fragment = fragment
      else
        self.set_scheme(scheme)
        self.set_userinfo(userinfo)
        self.set_host(host)
        self.set_port(port)
        self.set_path(path)
        self.query = query
        self.set_opaque(opaque)
        self.fragment=(fragment)
      end
      if registry
        raise InvalidURIError,
          "the scheme #{@scheme} does not accept registry part: #{registry} (or bad hostname?)"
      end

@scheme&.freeze
      self.set_path('') if !@path && !@opaque # (see RFC2396 Section 5.2)
      self.set_port(self.default_port) if self.default_port && !@port
    end

#
    # Returns the scheme component of the URI.
    #
    #   URI("http://foo/bar/baz").scheme #=> "http"
    #
    attr_reader :scheme

# Returns the host component of the URI.
    #
    #   URI("http://foo/bar/baz").host #=> "foo"
    #
    # It returns nil if no host component exists.
    #
    #   URI("mailto:foo@example.org").host #=> nil
    #
    # The component does not contain the port number.
    #
    #   URI("http://foo:8080/bar/baz").host #=> "foo"
    #
    # Since IPv6 addresses are wrapped with brackets in URIs,
    # this method returns IPv6 addresses wrapped with brackets.
    # This form is not appropriate to pass to socket methods such as TCPSocket.open.
    # If unwrapped host names are required, use the #hostname method.
    #
    #   URI("http://[::1]/bar/baz").host     #=> "[::1]"
    #   URI("http://[::1]/bar/baz").hostname #=> "::1"
    #
    attr_reader :host

# Returns the port component of the URI.
    #
    #   URI("http://foo/bar/baz").port      #=> 80
    #   URI("http://foo:8080/bar/baz").port #=> 8080
    #
    attr_reader :port

def registry # :nodoc:
      nil
    end

# Returns the path component of the URI.
    #
    #   URI("http://foo/bar/baz").path #=> "/bar/baz"
    #
    attr_reader :path

# Returns the query component of the URI.
    #
    #   URI("http://foo/bar/baz?search=FooBar").query #=> "search=FooBar"
    #
    attr_reader :query

# Returns the opaque part of the URI.
    #
    #   URI("mailto:foo@example.org").opaque #=> "foo@example.org"
    #   URI("http://foo/bar/baz").opaque     #=> nil
    #
    # The portion of the path that does not make use of the slash '/'.
    # The path typically refers to an absolute path or an opaque part.
    # (See RFC2396 Section 3 and 5.2.)
    #
    attr_reader :opaque

# Returns the fragment component of the URI.
    #
    #   URI("http://foo/bar/baz?search=FooBar#ponies").fragment #=> "ponies"
    #
    attr_reader :fragment

# Returns the parser to be used.
    #
    # Unless a URI::Parser is defined, DEFAULT_PARSER is used.
    #
    def parser
      if !defined?(@parser) || !@parser
        DEFAULT_PARSER
      else
        @parser || DEFAULT_PARSER
      end
    end

# Replaces self by other URI object.
    #
    def replace!(oth)
      if self.class != oth.class
        raise ArgumentError, "expected #{self.class} object"
      end

component.each do |c|
        self.__send__("#{c}=", oth.__send__(c))
      end
    end
    private :replace!

#
    # Components of the URI in the order.
    #
    def component
      self.class.component
    end

#
    # Checks the scheme +v+ component against the URI::Parser Regexp for :SCHEME.
    #
    def check_scheme(v)
      if v && parser.regexp[:SCHEME] !~ v
        raise InvalidComponentError,
          "bad component(expected scheme component): #{v}"
      end

return true
    end
    private :check_scheme

# Protected setter for the scheme component +v+.
    #
    # See also URI::Generic.scheme=.
    #
    def set_scheme(v)
      @scheme = v&.downcase
    end
    protected :set_scheme

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the scheme component +v+
    # (with validation).
    #
    # See also URI::Generic.check_scheme.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com")
    #   uri.scheme = "https"
    #   uri.to_s  #=> "https://my.example.com"
    #
    def scheme=(v)
      check_scheme(v)
      set_scheme(v)
      v
    end

#
    # Checks the +user+ and +password+.
    #
    # If +password+ is not provided, then +user+ is
    # split, using URI::Generic.split_userinfo, to
    # pull +user+ and +password.
    #
    # See also URI::Generic.check_user, URI::Generic.check_password.
    #
    def check_userinfo(user, password = nil)
      if !password
        user, password = split_userinfo(user)
      end
      check_user(user)
      check_password(password, user)

return true
    end
    private :check_userinfo

#
    # Checks the user +v+ component for RFC2396 compliance
    # and against the URI::Parser Regexp for :USERINFO.
    #
    # Can not have a registry or opaque component defined,
    # with a user component defined.
    #
    def check_user(v)
      if @opaque
        raise InvalidURIError,
          "can not set user with opaque"
      end

return v unless v

if parser.regexp[:USERINFO] !~ v
        raise InvalidComponentError,
          "bad component(expected userinfo component or user component): #{v}"
      end

return true
    end
    private :check_user

#
    # Checks the password +v+ component for RFC2396 compliance
    # and against the URI::Parser Regexp for :USERINFO.
    #
    # Can not have a registry or opaque component defined,
    # with a user component defined.
    #
    def check_password(v, user = @user)
      if @opaque
        raise InvalidURIError,
          "can not set password with opaque"
      end
      return v unless v

if !user
        raise InvalidURIError,
          "password component depends user component"
      end

if parser.regexp[:USERINFO] !~ v
        raise InvalidComponentError,
          "bad password component"
      end

return true
    end
    private :check_password

#
    # Sets userinfo, argument is string like 'name:pass'.
    #
    def userinfo=(userinfo)
      if userinfo.nil?
        return nil
      end
      check_userinfo(*userinfo)
      set_userinfo(*userinfo)
      # returns userinfo
    end

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the +user+ component
    # (with validation).
    #
    # See also URI::Generic.check_user.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://john:S3nsit1ve@my.example.com")
    #   uri.user = "sam"
    #   uri.to_s  #=> "http://sam:V3ry_S3nsit1ve@my.example.com"
    #
    def user=(user)
      check_user(user)
      set_user(user)
      # returns user
    end

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the +password+ component
    # (with validation).
    #
    # See also URI::Generic.check_password.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://john:S3nsit1ve@my.example.com")
    #   uri.password = "V3ry_S3nsit1ve"
    #   uri.to_s  #=> "http://john:V3ry_S3nsit1ve@my.example.com"
    #
    def password=(password)
      check_password(password)
      set_password(password)
      # returns password
    end

# Protected setter for the +user+ component, and +password+ if available
    # (with validation).
    #
    # See also URI::Generic.userinfo=.
    #
    def set_userinfo(user, password = nil)
      unless password
        user, password = split_userinfo(user)
      end
      @user     = user
      @password = password if password

[@user, @password]
    end
    protected :set_userinfo

# Protected setter for the user component +v+.
    #
    # See also URI::Generic.user=.
    #
    def set_user(v)
      set_userinfo(v, @password)
      v
    end
    protected :set_user

# Protected setter for the password component +v+.
    #
    # See also URI::Generic.password=.
    #
    def set_password(v)
      @password = v
      # returns v
    end
    protected :set_password

# Returns the userinfo +ui+ as <code>[user, password]</code>
    # if properly formatted as 'user:password'.
    def split_userinfo(ui)
      return nil, nil unless ui
      user, password = ui.split(':', 2)

return user, password
    end
    private :split_userinfo

# Escapes 'user:password' +v+ based on RFC 1738 section 3.1.
    def escape_userpass(v)
      parser.escape(v, /[@:\/]/o) # RFC 1738 section 3.1 #/
    end
    private :escape_userpass

# Returns the userinfo, either as 'user' or 'user:password'.
    def userinfo
      if @user.nil?
        nil
      elsif @password.nil?
        @user
      else
        @user + ':' + @password
      end
    end

# Returns the user component.
    def user
      @user
    end

# Returns the password component.
    def password
      @password
    end

#
    # Checks the host +v+ component for RFC2396 compliance
    # and against the URI::Parser Regexp for :HOST.
    #
    # Can not have a registry or opaque component defined,
    # with a host component defined.
    #
    def check_host(v)
      return v unless v

if @opaque
        raise InvalidURIError,
          "can not set host with registry or opaque"
      elsif parser.regexp[:HOST] !~ v
        raise InvalidComponentError,
          "bad component(expected host component): #{v}"
      end

return true
    end
    private :check_host

# Protected setter for the host component +v+.
    #
    # See also URI::Generic.host=.
    #
    def set_host(v)
      @host = v
    end
    protected :set_host

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the host component +v+
    # (with validation).
    #
    # See also URI::Generic.check_host.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com")
    #   uri.host = "foo.com"
    #   uri.to_s  #=> "http://foo.com"
    #
    def host=(v)
      check_host(v)
      set_host(v)
      v
    end

# Extract the host part of the URI and unwrap brackets for IPv6 addresses.
    #
    # This method is the same as URI::Generic#host except
    # brackets for IPv6 (and future IP) addresses are removed.
    #
    #   uri = URI("http://[::1]/bar")
    #   uri.hostname      #=> "::1"
    #   uri.host          #=> "[::1]"
    #
    def hostname
      v = self.host
      /\A\[(.*)\]\z/ =~ v ? $1 : v
    end

# Sets the host part of the URI as the argument with brackets for IPv6 addresses.
    #
    # This method is the same as URI::Generic#host= except
    # the argument can be a bare IPv6 address.
    #
    #   uri = URI("http://foo/bar")
    #   uri.hostname = "::1"
    #   uri.to_s  #=> "http://[::1]/bar"
    #
    # If the argument seems to be an IPv6 address,
    # it is wrapped with brackets.
    #
    def hostname=(v)
      v = "[#{v}]" if /\A\[.*\]\z/ !~ v && /:/ =~ v
      self.host = v
    end

#
    # Checks the port +v+ component for RFC2396 compliance
    # and against the URI::Parser Regexp for :PORT.
    #
    # Can not have a registry or opaque component defined,
    # with a port component defined.
    #
    def check_port(v)
      return v unless v

if @opaque
        raise InvalidURIError,
          "can not set port with registry or opaque"
      elsif !v.kind_of?(Integer) && parser.regexp[:PORT] !~ v
        raise InvalidComponentError,
          "bad component(expected port component): #{v.inspect}"
      end

return true
    end
    private :check_port

# Protected setter for the port component +v+.
    #
    # See also URI::Generic.port=.
    #
    def set_port(v)
      v = v.empty? ? nil : v.to_i unless !v || v.kind_of?(Integer)
      @port = v
    end
    protected :set_port

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the port component +v+
    # (with validation).
    #
    # See also URI::Generic.check_port.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com")
    #   uri.port = 8080
    #   uri.to_s  #=> "http://my.example.com:8080"
    #
    def port=(v)
      check_port(v)
      set_port(v)
      port
    end

def check_registry(v) # :nodoc:
      raise InvalidURIError, "can not set registry"
    end
    private :check_registry

def set_registry(v) #:nodoc:
      raise InvalidURIError, "can not set registry"
    end
    protected :set_registry

def registry=(v)
      raise InvalidURIError, "can not set registry"
    end

#
    # Checks the path +v+ component for RFC2396 compliance
    # and against the URI::Parser Regexp
    # for :ABS_PATH and :REL_PATH.
    #
    # Can not have a opaque component defined,
    # with a path component defined.
    #
    def check_path(v)
      # raise if both hier and opaque are not nil, because:
      # absoluteURI   = scheme ":" ( hier_part | opaque_part )
      # hier_part     = ( net_path | abs_path ) [ "?" query ]
      if v && @opaque
        raise InvalidURIError,
          "path conflicts with opaque"
      end

# If scheme is ftp, path may be relative.
      # See RFC 1738 section 3.2.2, and RFC 2396.
      if @scheme && @scheme != "ftp"
        if v && v != '' && parser.regexp[:ABS_PATH] !~ v
          raise InvalidComponentError,
            "bad component(expected absolute path component): #{v}"
        end
      else
        if v && v != '' && parser.regexp[:ABS_PATH] !~ v &&
           parser.regexp[:REL_PATH] !~ v
          raise InvalidComponentError,
            "bad component(expected relative path component): #{v}"
        end
      end

return true
    end
    private :check_path

# Protected setter for the path component +v+.
    #
    # See also URI::Generic.path=.
    #
    def set_path(v)
      @path = v
    end
    protected :set_path

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the path component +v+
    # (with validation).
    #
    # See also URI::Generic.check_path.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com/pub/files")
    #   uri.path = "/faq/"
    #   uri.to_s  #=> "http://my.example.com/faq/"
    #
    def path=(v)
      check_path(v)
      set_path(v)
      v
    end

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the query component +v+.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com/?id=25")
    #   uri.query = "id=1"
    #   uri.to_s  #=> "http://my.example.com/?id=1"
    #
    def query=(v)
      return @query = nil unless v
      raise InvalidURIError, "query conflicts with opaque" if @opaque

x = v.to_str
      v = x.dup if x.equal? v
      v.encode!(Encoding::UTF_8) rescue nil
      v.delete!("\t\r\n")
      v.force_encoding(Encoding::ASCII_8BIT)
      raise InvalidURIError, "invalid percent escape: #{$1}" if /(%\H\H)/n.match(v)
      v.gsub!(/(?!%\h\h|[!$-&(-;=?-_a-~])./n.freeze){'%%%02X' % $&.ord}
      v.force_encoding(Encoding::US_ASCII)
      @query = v
    end

#
    # Checks the opaque +v+ component for RFC2396 compliance and
    # against the URI::Parser Regexp for :OPAQUE.
    #
    # Can not have a host, port, user, or path component defined,
    # with an opaque component defined.
    #
    def check_opaque(v)
      return v unless v

# raise if both hier and opaque are not nil, because:
      # absoluteURI   = scheme ":" ( hier_part | opaque_part )
      # hier_part     = ( net_path | abs_path ) [ "?" query ]
      if @host || @port || @user || @path  # userinfo = @user + ':' + @password
        raise InvalidURIError,
          "can not set opaque with host, port, userinfo or path"
      elsif v && parser.regexp[:OPAQUE] !~ v
        raise InvalidComponentError,
          "bad component(expected opaque component): #{v}"
      end

return true
    end
    private :check_opaque

# Protected setter for the opaque component +v+.
    #
    # See also URI::Generic.opaque=.
    #
    def set_opaque(v)
      @opaque = v
    end
    protected :set_opaque

#
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the opaque component +v+
    # (with validation).
    #
    # See also URI::Generic.check_opaque.
    #
    def opaque=(v)
      check_opaque(v)
      set_opaque(v)
      v
    end

#
    # Checks the fragment +v+ component against the URI::Parser Regexp for :FRAGMENT.
    #
    #
    # == Args
    #
    # +v+::
    #    String
    #
    # == Description
    #
    # Public setter for the fragment component +v+
    # (with validation).
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com/?id=25#time=1305212049")
    #   uri.fragment = "time=1305212086"
    #   uri.to_s  #=> "http://my.example.com/?id=25#time=1305212086"
    #
    def fragment=(v)
      return @fragment = nil unless v

x = v.to_str
      v = x.dup if x.equal? v
      v.encode!(Encoding::UTF_8) rescue nil
      v.delete!("\t\r\n")
      v.force_encoding(Encoding::ASCII_8BIT)
      v.gsub!(/(?!%\h\h|[!-~])./n){'%%%02X' % $&.ord}
      v.force_encoding(Encoding::US_ASCII)
      @fragment = v
    end

#
    # Returns true if URI is hierarchical.
    #
    # == Description
    #
    # URI has components listed in order of decreasing significance from left to right,
    # see RFC3986 https://tools.ietf.org/html/rfc3986 1.2.3.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com/")
    #   uri.hierarchical?
    #   #=> true
    #   uri = URI.parse("mailto:joe@example.com")
    #   uri.hierarchical?
    #   #=> false
    #
    def hierarchical?
      if @path
        true
      else
        false
      end
    end

#
    # Returns true if URI has a scheme (e.g. http:// or https://) specified.
    #
    def absolute?
      if @scheme
        true
      else
        false
      end
    end
    alias absolute absolute?

#
    # Returns true if URI does not have a scheme (e.g. http:// or https://) specified.
    #
    def relative?
      !absolute?
    end

#
    # Returns an Array of the path split on '/'.
    #
    def split_path(path)
      path.split("/", -1)
    end
    private :split_path

#
    # Merges a base path +base+, with relative path +rel+,
    # returns a modified base path.
    #
    def merge_path(base, rel)

# RFC2396, Section 5.2, 5)
      # RFC2396, Section 5.2, 6)
      base_path = split_path(base)
      rel_path  = split_path(rel)

# RFC2396, Section 5.2, 6), a)
      base_path << '' if base_path.last == '..'
      while i = base_path.index('..')
        base_path.slice!(i - 1, 2)
      end

if (first = rel_path.first) and first.empty?
        base_path.clear
        rel_path.shift
      end

# RFC2396, Section 5.2, 6), c)
      # RFC2396, Section 5.2, 6), d)
      rel_path.push('') if rel_path.last == '.' || rel_path.last == '..'
      rel_path.delete('.')

# RFC2396, Section 5.2, 6), e)
      tmp = []
      rel_path.each do |x|
        if x == '..' &&
            !(tmp.empty? || tmp.last == '..')
          tmp.pop
        else
          tmp << x
        end
      end

add_trailer_slash = !tmp.empty?
      if base_path.empty?
        base_path = [''] # keep '/' for root directory
      elsif add_trailer_slash
        base_path.pop
      end
      while x = tmp.shift
        if x == '..'
          # RFC2396, Section 4
          # a .. or . in an absolute path has no special meaning
          base_path.pop if base_path.size > 1
        else
          # if x == '..'
          #   valid absolute (but abnormal) path "/../..."
          # else
          #   valid absolute path
          # end
          base_path << x
          tmp.each {|t| base_path << t}
          add_trailer_slash = false
          break
        end
      end
      base_path.push('') if add_trailer_slash

return base_path.join('/')
    end
    private :merge_path

#
    # == Args
    #
    # +oth+::
    #    URI or String
    #
    # == Description
    #
    # Destructive form of #merge.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com")
    #   uri.merge!("/main.rbx?page=1")
    #   uri.to_s  # => "http://my.example.com/main.rbx?page=1"
    #
    def merge!(oth)
      t = merge(oth)
      if self == t
        nil
      else
        replace!(t)
        self
      end
    end

#
    # == Args
    #
    # +oth+::
    #    URI or String
    #
    # == Description
    #
    # Merges two URIs.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com")
    #   uri.merge("/main.rbx?page=1")
    #   # => "http://my.example.com/main.rbx?page=1"
    #
    def merge(oth)
      rel = parser.send(:convert_to_uri, oth)

if rel.absolute?
        #raise BadURIError, "both URI are absolute" if absolute?
        # hmm... should return oth for usability?
        return rel
      end

unless self.absolute?
        raise BadURIError, "both URI are relative"
      end

base = self.dup

authority = rel.userinfo || rel.host || rel.port

# RFC2396, Section 5.2, 2)
      if (rel.path.nil? || rel.path.empty?) && !authority && !rel.query
        base.fragment=(rel.fragment) if rel.fragment
        return base
      end

base.query = nil
      base.fragment=(nil)

# RFC2396, Section 5.2, 4)
      if !authority
        base.set_path(merge_path(base.path, rel.path)) if base.path && rel.path
      else
        # RFC2396, Section 5.2, 4)
        base.set_path(rel.path) if rel.path
      end

# RFC2396, Section 5.2, 7)
      base.set_userinfo(rel.userinfo) if rel.userinfo
      base.set_host(rel.host)         if rel.host
      base.set_port(rel.port)         if rel.port
      base.query = rel.query       if rel.query
      base.fragment=(rel.fragment) if rel.fragment

return base
    end # merge
    alias + merge

# :stopdoc:
    def route_from_path(src, dst)
      case dst
      when src
        # RFC2396, Section 4.2
        return ''
      when %r{(?:\A|/)\.\.?(?:/|\z)}
        # dst has abnormal absolute path,
        # like "/./", "/../", "/x/../", ...
        return dst.dup
      end

src_path = src.scan(%r{[^/]*/})
      dst_path = dst.scan(%r{[^/]*/?})

# discard same parts
      while !dst_path.empty? && dst_path.first == src_path.first
        src_path.shift
        dst_path.shift
      end

tmp = dst_path.join

# calculate
      if src_path.empty?
        if tmp.empty?
          return './'
        elsif dst_path.first.include?(':') # (see RFC2396 Section 5)
          return './' + tmp
        else
          return tmp
        end
      end

return '../' * src_path.size + tmp
    end
    private :route_from_path
    # :startdoc:

# :stopdoc:
    def route_from0(oth)
      oth = parser.send(:convert_to_uri, oth)
      if self.relative?
        raise BadURIError,
          "relative URI: #{self}"
      end
      if oth.relative?
        raise BadURIError,
          "relative URI: #{oth}"
      end

if self.scheme != oth.scheme
        return self, self.dup
      end
      rel = URI::Generic.new(nil, # it is relative URI
                             self.userinfo, self.host, self.port,
                             nil, self.path, self.opaque,
                             self.query, self.fragment, parser)

if rel.userinfo != oth.userinfo ||
          rel.host.to_s.downcase != oth.host.to_s.downcase ||
          rel.port != oth.port

if self.userinfo.nil? && self.host.nil?
          return self, self.dup
        end

rel.set_port(nil) if rel.port == oth.default_port
        return rel, rel
      end
      rel.set_userinfo(nil)
      rel.set_host(nil)
      rel.set_port(nil)

if rel.path && rel.path == oth.path
        rel.set_path('')
        rel.query = nil if rel.query == oth.query
        return rel, rel
      elsif rel.opaque && rel.opaque == oth.opaque
        rel.set_opaque('')
        rel.query = nil if rel.query == oth.query
        return rel, rel
      end

# you can modify `rel', but can not `oth'.
      return oth, rel
    end
    private :route_from0
    # :startdoc:

#
    # == Args
    #
    # +oth+::
    #    URI or String
    #
    # == Description
    #
    # Calculates relative path from oth to self.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse('http://my.example.com/main.rbx?page=1')
    #   uri.route_from('http://my.example.com')
    #   #=> #<URI::Generic /main.rbx?page=1>
    #
    def route_from(oth)
      # you can modify `rel', but can not `oth'.
      begin
        oth, rel = route_from0(oth)
      rescue
        raise $!.class, $!.message
      end
      if oth == rel
        return rel
      end

rel.set_path(route_from_path(oth.path, self.path))
      if rel.path == './' && self.query
        # "./?foo" -> "?foo"
        rel.set_path('')
      end

return rel
    end

alias - route_from

#
    # == Args
    #
    # +oth+::
    #    URI or String
    #
    # == Description
    #
    # Calculates relative path to oth from self.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse('http://my.example.com')
    #   uri.route_to('http://my.example.com/main.rbx?page=1')
    #   #=> #<URI::Generic /main.rbx?page=1>
    #
    def route_to(oth)
      parser.send(:convert_to_uri, oth).route_from(self)
    end

#
    # Returns normalized URI.
    #
    #   require 'uri'
    #
    #   URI("HTTP://my.EXAMPLE.com").normalize
    #   #=> #<URI::HTTP http://my.example.com/>
    #
    # Normalization here means:
    #
    # * scheme and host are converted to lowercase,
    # * an empty path component is set to "/".
    #
    def normalize
      uri = dup
      uri.normalize!
      uri
    end

#
    # Destructive version of #normalize.
    #
    def normalize!
      if path&.empty?
        set_path('/')
      end
      if scheme && scheme != scheme.downcase
        set_scheme(self.scheme.downcase)
      end
      if host && host != host.downcase
        set_host(self.host.downcase)
      end
    end

#
    # Constructs String from URI.
    #
    def to_s
      str = ''.dup
      if @scheme
        str << @scheme
        str << ':'
      end

if @opaque
        str << @opaque
      else
        if @host || %w[file postgres].include?(@scheme)
          str << '//'
        end
        if self.userinfo
          str << self.userinfo
          str << '@'
        end
        if @host
          str << @host
        end
        if @port && @port != self.default_port
          str << ':'
          str << @port.to_s
        end
        str << @path
        if @query
          str << '?'
          str << @query
        end
      end
      if @fragment
        str << '#'
        str << @fragment
      end
      str
    end

#
    # Compares two URIs.
    #
    def ==(oth)
      if self.class == oth.class
        self.normalize.component_ary == oth.normalize.component_ary
      else
        false
      end
    end

def hash
      self.component_ary.hash
    end

def eql?(oth)
      self.class == oth.class &&
      parser == oth.parser &&
      self.component_ary.eql?(oth.component_ary)
    end

=begin

--- URI::Generic#===(oth)

=end
#    def ===(oth)
#      raise NotImplementedError
#    end

=begin
=end

# Returns an Array of the components defined from the COMPONENT Array.
    def component_ary
      component.collect do |x|
        self.send(x)
      end
    end
    protected :component_ary

# == Args
    #
    # +components+::
    #    Multiple Symbol arguments defined in URI::HTTP.
    #
    # == Description
    #
    # Selects specified components from URI.
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse('http://myuser:mypass@my.example.com/test.rbx')
    #   uri.select(:userinfo, :host, :path)
    #   # => ["myuser:mypass", "my.example.com", "/test.rbx"]
    #
    def select(*components)
      components.collect do |c|
        if component.include?(c)
          self.send(c)
        else
          raise ArgumentError,
            "expected of components of #{self.class} (#{self.class.component.join(', ')})"
        end
      end
    end

def inspect
      "#<#{self.class} #{self}>"
    end

#
    # == Args
    #
    # +v+::
    #    URI or String
    #
    # == Description
    #
    # Attempts to parse other URI +oth+,
    # returns [parsed_oth, self].
    #
    # == Usage
    #
    #   require 'uri'
    #
    #   uri = URI.parse("http://my.example.com")
    #   uri.coerce("http://foo.com")
    #   #=> [#<URI::HTTP http://foo.com>, #<URI::HTTP http://my.example.com>]
    #
    def coerce(oth)
      case oth
      when String
        oth = parser.parse(oth)
      else
        super
      end

return oth, self
    end

# Returns a proxy URI.
    # The proxy URI is obtained from environment variables such as http_proxy,
    # ftp_proxy, no_proxy, etc.
    # If there is no proper proxy, nil is returned.
    #
    # If the optional parameter +env+ is specified, it is used instead of ENV.
    #
    # Note that capitalized variables (HTTP_PROXY, FTP_PROXY, NO_PROXY, etc.)
    # are examined, too.
    #
    # But http_proxy and HTTP_PROXY is treated specially under CGI environment.
    # It's because HTTP_PROXY may be set by Proxy: header.
    # So HTTP_PROXY is not used.
    # http_proxy is not used too if the variable is case insensitive.
    # CGI_HTTP_PROXY can be used instead.
    def find_proxy(env=ENV)
      raise BadURIError, "relative URI: #{self}" if self.relative?
      name = self.scheme.downcase + '_proxy'
      proxy_uri = nil
      if name == 'http_proxy' && env.include?('REQUEST_METHOD') # CGI?
        # HTTP_PROXY conflicts with *_proxy for proxy settings and
        # HTTP_* for header information in CGI.
        # So it should be careful to use it.
        pairs = env.reject {|k, v| /\Ahttp_proxy\z/i !~ k }
        case pairs.length
        when 0 # no proxy setting anyway.
          proxy_uri = nil
        when 1
          k, _ = pairs.shift
          if k == 'http_proxy' && env[k.upcase] == nil
            # http_proxy is safe to use because ENV is case sensitive.
            proxy_uri = env[name]
          else
            proxy_uri = nil
          end
        else # http_proxy is safe to use because ENV is case sensitive.
          proxy_uri = env.to_hash[name]
        end
        if !proxy_uri
          # Use CGI_HTTP_PROXY.  cf. libwww-perl.
          proxy_uri = env["CGI_#{name.upcase}"]
        end
      elsif name == 'http_proxy'
        unless proxy_uri = env[name]
          if proxy_uri = env[name.upcase]
            warn 'The environment variable HTTP_PROXY is discouraged.  Use http_proxy.', uplevel: 1
          end
        end
      else
        proxy_uri = env[name] || env[name.upcase]
      end

if proxy_uri.nil? || proxy_uri.empty?
        return nil
      end

if self.hostname
        begin
          addr = IPSocket.getaddress(self.hostname)
          return nil if /\A127\.|\A::1\z/ =~ addr
        rescue SocketError
        end
      end

name = 'no_proxy'
      if no_proxy = env[name] || env[name.upcase]
        return nil unless URI::Generic.use_proxy?(self.hostname, addr, self.port, no_proxy)
      end
      URI.parse(proxy_uri)
    end

def self.use_proxy?(hostname, addr, port, no_proxy) # :nodoc:
      hostname = hostname.downcase
      dothostname = ".#{hostname}"
      no_proxy.scan(/([^:,\s]+)(?::(\d+))?/) {|p_host, p_port|
        if !p_port || port == p_port.to_i
          if p_host.start_with?('.')
            return false if hostname.end_with?(p_host.downcase)
          else
            return false if dothostname.end_with?(".#{p_host.downcase}")
          end
          if addr
            begin
              return false if IPAddr.new(p_host).include?(addr)
            rescue IPAddr::InvalidAddressError
              next
            end
          end
        end
      }
      true
    end
  end
end

cmd: